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Issue
No measured value is
displayed.
Zero adjustment values
are not being applied.
Zero adjustment cannot
be performed.
The unit test generates
a FAIL result.
Switching is too slow.
List of functional limitations
COMP
COMP
TC
ΔT
−
BIN
−
MUX
STAT
AUTO RANGE,
−
RANGE change
• When low-power mode is on, OVC will be fixed to on and contact improvement will be fixed to off. During SLOW2 operation,
two-iteration averaging is used even if the averaging function is off.
• When the multiplex scan function is set to auto or step, the trigger source is automatically set to EXT. In addition, the
communications function's memory function will not be available for use.
• When using the multiplexer in 2-wire mode, the contact check function is disabled. In addition, the ranges of 1000 m
will not be available for use.
Display
Possible causes
−
The wrong channel is being
measured.
[NO UNIT]
The set unit number and
the unit number in which
the Z3003 is installed differ.
The connected device is
set to an external device.
−
The relays are worn.
−
The wiring is shorted.
−
See "No measured value is displayed." (p. 1 9)
−
A fuse is blown.
−
Zero adjustment has not
been performed for each
channel.
−
The route resistance is too
high. (Measured values
before zero adjustment
exceed −1% to 50% of
each range full-scale, or
a measurement fault has
occurred.)
−
The connected device is
set to an external device.
−
• The relays are worn.
• The fuse in the unit is
blown out.
−
The relay hot switching
prevention function is being
triggered because back
EMF is remaining when
measuring a transformer.
TC
ΔT
−
−
−
−
−
HIOKI RM3545E965-00
Check the current channel and the channel setting.
Check the settings and rear of the unit.
Set the connected device to the RM3545A.
Perform the multiplexer unit test. If it yields a FAIL
result, request repair of the Z3003.
Check the wiring.
Please ensure connections have been made
properly. If you are still unable to perform
measurement, the internal protective fuse may
have blown. Request repair of the Z3003.
Check whether zero adjustment has been
performed for each channel on the Multiplexer
Basic Measurement screen. Zero adjustment is
performed separately for the front terminals and
for each channel, so you will need to perform it for
each channel (scanning zero adjustment can also
be performed).
Zero adjustment cannot be performed when the
route resistance is too high. Modify your setup so
that the route resistance is less than 50% of the
measurement target.
Zero adjustment cannot be performed for channels
whose connected device is an external device.
Set the connected device to the RM3545A.
Request repair of the Z3003.
Use a high-resistance range or lower the
measurement current, for example by using the
low current switching setting.
BIN
MUX
−
−
−
−
−
−
19
Solutions
: Compatible, −: Incompatible
AUTO RANGE,
STAT
RANGE change
−
−
−
−
Ω
and less
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